The Cogent Silica-C™ is HPLC grade silica with a silica hydride surface. Made completely free of carbon, this unique stationary phase will adsorb and desorb solvents commonly used in mobile phases very differently from ordinary silica resulting in fantastic benefits to the chromatographer. Excellent for normal phase chromatography and solvent dyring is not needed.

• Totally Inorganic
• Will Not Adsorb Water
• Use for Prep or Analytical
• Unbonded
• Carbon Free

Since these columns have virtually no silanols remaining (less than 2%), they do not have a strong association with water and other solvents and will not have the expected hydration shell of other silica based columns.

Excellent choice for normal phase and preparative chromatography because they produce a very unique selectivity are extremely stable for long column life and can be used to retain some polar compounds making it a favorite of many doing LCMS and medicinal chemistry. These columns have been used in Aqueous Normal Phase and Reversed Phase HPLC as well.

This allows you to use them for normal phase HPLC without having to concern yourself with the moisture content of the solvents.